[CRConrad]

Why would you necessarily need to be "active" in the first place?

If you're obviously invited only as a "seat filler" (and why else would the meeting be boring?), I see nothing wrong with being passive.

[CatalystPz]

Fair point, but then again, what's the difference between intentionally being passive cause the meeting isn't relevant, and actually wanting to pay attention, and finding out that you drift off without noticing, i'm more interested in the second case.